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No. 619,54l. Patented Feb. 14, 1899.

S. W. BUTTERFIELD. WOOD SAWING MACHINE.

{Application filed Apr. 4, 1898.)

No Model.)

By I M M HPNM (a 701'; flttorneys Tu: Norms Pmns co. PHOTO-LUNG.WASHINGYOE u. c.

4 Sheets-Sheet I.

No. 6l9,54l. Patented Feb. 14, I899.

- S. W. BUTTERFIELD.

WOOD SAWING MACHINE. (Application filed Apr. 4, 1898.) (No Model.) 4Sheats-Sheet 2.

Witnesses 701 4 fittorqeys 1m: mums PUERS co. vnowmmu, WASHINGTON. u, c.

No. 6l9,54|. Patented Feb. I4, I899.

s.-w. BUTTERFIELD.

WOOD SAWING MACHINE.

(Application filed Apr. 4. 1898.) (No Model.) '4 Sheets-Sheet 3.

' Wimesses; Samuel 'lxBwil'qfbkldlnvenror m (Q I 5 fins @Mforneys m:norms PETERS c0. PHOTQLITHO wusummon, a. c.

No. 6l9,54l. 4 Patented Feb. 14, I899. S. W. BUTTERFIELD WOOD SAWINGMACHINE.

(Application filed. Apr. 4, 1898., (No Model.) 4 Sheets-Sheet 4.

IL/0 RF) N o /v/ I If J6 141. w I /L Wiinesses; Janna-OZfiufimfa'dalnvehcor UNITED STATES PATENT FFICE.

SAMUEL WVESLEY BUTTERFIELD, OF THREE RIVERS, CANADA.

WOOD-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 619,541, dated February14, 1899.

Application filed April 4, 1898. Serial No. 6 76,482. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL WESLEY BUT- TERFIELD, a citizen of. theUnited States of America, residing in the city and district of ThreeRivers, Province of Quebec, Canada, have invented certain new and usefulImprovements in W'ood-Sawing Machines, (for which I have obtainedLetters Patent of the Dominion of Canada, dated June 13, 1898, theapplication for which was filed May 31, 1898, Serial No. 81,973,). and Ido hereby declare the following to be a clear, full, and eX- actdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in wood-sawing machines.

The object of my invention is to provide a device of this character inwhich the logs or pieces of wood will be fed automatically to the saw.

A further object is to provide a log-holder in which the logs will beautomatically placed in suitable holders, within which they will be heldagainst disengagement during the period of sawing and from which thelogs will be automatically dumped after being sawed.

To these and other ends my invention consists in the improvedconstruction and combination of parts hereinafter fully described, andparticularly pointed out in the appended claim.

In the drawings, in which similar letters of reference indicate similarparts in all of the Views, Figure 1 is a side elevation of my improveddevice. Fig. 2 is a plan View of the same. Fig. 3 is a detail of one ofthe log-holders. Fig. 4. is a plan view of a machine arranged with twosaws. Fig. 5 is a side elevation of the same. Fig. 6 is a View similarto Fig. 4 as arranged for use with four saws. Fig. 7 is a side elevationof the same.

In the sawing of logs into suitable lengthssuch, for instance, as usedin the manufacture of paper-pulp-where it is essential that they besawed into fixed lengths and with the least possible amount of handlingthe present operation is very expensive, inasmuch as the logs must behandled many times, must be clamped in position byhand, and when sawedmust be unclamped and taken from the machine by hand. This practice isvery disadvantageous; and it is to obviate this and to provide anautomatically-operated machine that. I have provided theherein-described construction.

A designates the frame of my machine,which is of any preferredconstruction provided it is substantial and will withstand reasonablewear and tear. The upper face of the framework (which in theconstruction shown in the drawings is formed for use with but one saw)is provided with a series of tracks or slides a, inclined downward fromthe rear to the front end of the machine. As shown, these tracks orslides are four in number, two on each side of the saw; but it isobvious that where more saws are used a greater number of tracks orslides are provided.

At each end of the machine is provided a series of drums or, having aplurality of sides, preferably six, each series of drums being removablyconnected to the frame. These drums are adapted to receive and rotate aseries of endless log-carrying chains a", the chains being adapted toslide or be drawn over the tracks or slides a, as shown in Fig. 1. Eachchain a is formed of a plurality of links a and connecting-bars a, thelinks a being preferably formed substantially as shown in Fig. 3, theupper face of the link having a V-shaped opening, the edges of theopening being provided with inwardly-extending teeth which are adaptedto engage the periphery of the log and hold it in position while beingsawed. As there are two chains on each side of the saw, it will beapparent that when the log is placed in position to be carried to thesaw it will be held against any lateral or longitudinal movement byreason of its being in the V-shaped opening, while it will be preventedfrom rotating while being sawed by the teeth of, biting into theperipherythe more the inclination to turn the tighter the teeth willhold. After the log has been sawed the two pieces will be carried on bythe chain and dumped automatically at the end of the machine.

The chains a are moved by means of a suitable sprocket-wheel of, mountedon the end of the shaft of the rear series of drums a,

the sprocket-wheel a being operated by a sprocket-wheel a mounted on thedrive-shaft a of the machine, the two sprocket-wheels being connected bya suitable sprocket-chain a, the sprockets being arranged in such man--face of which is connected one end of a pit-- man a the opposite endofwhich is pivotally connected to a lever 0. connected to one end of ashaft a, mounted in a suitable frame a. Mounted on the shaft or aresuitable log-releasing dogs a, which are adapted to feed the logs to thecarrying-chain a singly at each revolution of the disk a A suitablefriction clutch or roll a is mounted in the frame A to throw the machineinto and out of engagement.

The operation of the machine will be readily seen, it being obvious thatwhen the frictional contact is made with the drive-shaft the hexagonaldrums will rotate, and as each link a is passing under the log-holdertable the releasing-dogs (1 will operate to release a log, holding thenext from passing out, the log rolling into the series of parallel linksa the front end of the dog aiding to start the log rolling. The logs arethen sawed, as hereinbefore explained.

As shown in Figs. 4: to 7, inclusive, the same construction andarrangement is used when it is desired to cut the logs into smalllengths at practically the same time.

As shown in Figs. 4 and 5, the saws are arranged to cut into threelengths, each portion being carried forward to the same point. It willbe seen that the saws are arranged in such manner that the log will havepassed the moving saw before coming in contact with the next saw infront, thus preventing any liability of the saw being bent or ofaccidents resulting from the contact of the central portion of the logwith both saws at the same time. The construction shown in Figs. 6 and 7is similar to that shown in Figs. 4 and 5,with the exception of theouter saws,which are adapted to saw off the ends of the log before beingcarried to the remaining saws, the four-saw construction being intendedfor the purpose of cutting up long logs into proper sizes for theremaining construction shown.

Having thus described my invention,what I claim as new is Asawing-machine, comprising a frame; a series of drums rotatively locatedthereon; a series of log-carrying chains mounted on said drums, each ofsaid chains comprising a series of links and connecting-bars arrangeda1- ternately with said links, each of said links havinga V-shapedopening, inwardly-extending teeth formed on said link extending intosaid opening, whereby the logs will be held from rotary movement on saidchains; a driving-shaft mounted on said frame; connections between oneof said drums and said drivingshaft, for imparting movement to saidchains; a saw, rotatively mounted above and extending into the path ofmovement of said chains; a log-loader mounted at one end of said frameabove said chains; and a connecting-bar, connected to said log-loaderand said drivingshaft, whereby a movement of said shaft willautomatically pass the logs into successive links, substantially asdescribed.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

SAMUEL WESLEY BUTTERFIELD.

Witnesses:

W. J. RITCHIE, J OSEPI-I CHAMPOUX, Sr.

